Self-propelled sled.



N. YAGH. l

- SELF PROPBLLED SLBD.

' APPLICATION FILED DEO. Z3, 1910.

Patented Aug. 22, 1911.

2 SHEETS-SHEET 1. y

Snom/VCO@ N. YACH.

SELF PROPBLLBD SLED.

APPLICATION FILED 11150. 2a, 1910.

Patented Aug. 22, 1911.

2 SHEETS-SHEET 2.

' bearing NICK YAGH, OF POLONIA, WISCONSIN.

SEL-FQROPELLED SLED.

` 'Application led December Specification-of Letters Patent. Patented'gs 25%? iilii 23,1910. Serial No. 598,927.

- censin, have inventedicertain new and usel'nl Jlmpinvements inSelf-Propelled Sleds; and l do declare the following to be a full,rlear, and exact description of the invention, such as will enableothers skilled. in the art to which it appertains to make and use4 thesame.

- rThis invention rela-tes to improvements in self propelled sleds. y

One object of the invention is to provide a sled having thereon animproved construction andV arrangement of propeller mechanism wherebythe sled may be rapidly driven over snow or ice.

Another object is to provide an improved c construction and arrangementvof steering mechanism whereby the sled may be readily controlled.

lilith the foregoing and other objects in view, the invention consistsof certain novel features of construction, combination and arrangementof parts as will be more fully described and particularlypointed out inthe appended claim.

ln the accompanying drawings: Figure is a side view of a sled showingthe application of my improved propelling mechanism; Fig. 2 is a bottomplan view thereof; 3 is a front end View; Fig. 4 is a rear end view isan irregular vertical lon- `'itudinal section on the line 5-5 of- Fig`.4; Fig. 6 is a vertical cross'section through v7the runners and theoperating mechanism fer the propellers.

Referring more particularly to the drawl ings, 1 denotes the bodyportion of my improvedsled, said body portion comprising a nlatforin 2,longitudinally ldisposed sills a frontbolster4and a rear bolster 5.`ournalediin suitable bearings on the under.

side of the rear bolster 5 is a rear runner supporting and propellingshaft 6.

To the outer ends of the shaft 6 are pivotally connected rear runners 7,`said runners having on their upper sides pairs of blocks 8 with whichthe outer ends of the shaft 6 are engaged. On the outer ends of the yshaft between the bearing 1blocks 8 are -iXedly mounted sprocket wheels9 the operation of which will be hereinafter more fully describedr Onthe lower sides of the runners are formed longi- Nicn YACH, a citizen itudinally extending guide grooves or channels 11 and to Athe lower sidesef the runside wallsyof the nels and form longitudinal flanges 13..

g wardly beyond the g il formed recesses in which are revolubly .imounted pairsof guiderollers i the rear ends of the runners are formedre- A cesses 1n which are revolubly mounted guide rollers 15. Around therollers .141 and .15

stretches of which passover and are engaged by the sprocketl gears 9whereby said chains are driven., spaced at suitable distances apart areteeth or shaft propelling lugs 17, said lugs being suitably securedtothe links of the chains and having in their opposite sides transversegrooves or notches 18 with which when the lugs pass through the channels11 are by th lugs are guided and held in position while engaging thesnow or ice over which the sled is being driven.

On the shaft 6 preferably midway between its ends is fixedly mounted asprocket gear 19 which is connected by a sprocket chain 20 to a driveshaftv 21 revolubly mounted in suitable bearings in the sills of theplatform. The shaft 911 is driven in any suitable manner and is hereshown as being provided on one end With a sprocket gear 22 which isconnected by al sprocket chain suitable motor 25 arranged on the wherebythe propelling devices of the runners may be operated.

connected togetherby a cross bar to which is'loosely connected the rearend of a reach bar 27 the forward end nf which is connected by anattaching plate '28 tc a king bolt or-pin 29 by means of which the frontrunners 30 are pvotally connected to the front bolster Lof the sled. fThe runners 3() are connected together by a cross bar B1 in which` isformed a centrallyT or passage 32 with which the king pin or bolt 29 isengaged. The. front runners 8O are preferably provided'on their loweredges with centrally disposed shoes or runner bars 33.

ners on the opposite sides ofthe channels' 11 are secured metal shoes orwear pirates 12 the inner edges of .which project in-v 14: n while 1nand'through the channels 11 are arrangedl endless sprocket chains 16 theupper engaged the flanges 13 of the shoes 12 where-- 23 with a sprocketgear 241 on the shaft of a sled .y

The front ends of the rear runners are In the front ends of the runners7 are To the chains 16 and' disposedV hole In order to control themovement of the sled I provide a suitable steering 4mechanism comprisinga cable winding drum 34 which is iixedly mounted on the lowerendwofasteering shaft 35' which is revolubly .mounted in suitablebearings on thefront end ofthe sled and projectsl up through* theplatform 4thereof as shown. The shaft 35 has arto bewound on and olfthesame in opposite directions are steering cables 37 which pass from thedrum 34 around. guide pulleys 38 and from thenceare crossed and extendedto the opposite outer ends of the runners to which the ends of thecables are firmly secured in any suitable manner. yBy thus arranging theAcables `37 `the front runners may be turned in the'desired direction bywindingup one orthe other ofthe `'cables on the drum which operationwill1 unwind the other cable' thereby steeringthe'sled.

From the foregoing description taken in connection with the accompanyingdrawings the construction and operation-of the invention will be readilyunderstood-,without requiring a more extended explanation.

Having thus described my invention, what I claim is: e

In a self propelled sled comprising a-platform, a vdriven shaft, rearrunners having bearing blocks thereon to pivotally connect the ends ofthe shaft to the runners, sprocket wheels on the opposite ends of theshaft, a sprocket wheel also on the central portion of the shaft, therear runners having l' ngitudinally, extended 'channels on the owcr lvand said sprocket wheels and operating through said channels, teethsecured to the links of the chains and depending from the same, saidteeth having grooves in their opposite sides which are adaptedtocontactwith said longitudinal flanges of said wear plates when thechains are operated, 'and a drive shaft having a central gear. providedwitha sprocket chain) thereon and on the gear of the shaft of the rearrunners.

In ltestimony whereof I have hereunto set my hand in presence. of twosubscribing witnesses.

NICK YACH. Witnesses F. A. NEUBERGR, M. W. Riou.

Copies of this patent may be obtained for iive cents each, by addressingthe Commissioner of .EatentsVA` Washington, D'. C.

